How to switch between graphics cards

[BlackBlade]

how do i switch the graphics cards in my 15" MBP?
its the current highest end 15" and is there just a application or what
it has the dual graphics cards

thx!

 

[spinnerlys]

System Preferences > Energy Saver > Higher Performance

 

[BlackBlade]

thankyou!!!!!
is there anyway i can do it without loging out?
cuz mine says you do.

 

[Bill Gates]

thankyou!!!!!
is there anyway i can do it without loging out?
cuz mine says you do.

No.